| Kingsbridge Property Maintenance Ltd | Administrative & support | 2022 |
| Kingsbridge Rugby Football Club Limited | Arts & recreation | 2010 |
| Kingsbridge Rugby Football Club Trading Company Limited | Hospitality | 2019 |
| Kingsbridge Salcombe Ferry Company Ltd | Transport & logistics | 2017 |
| Kingsbridge Stationers Ltd | Wholesale & retail | 2010 |
| Kingsbridge TIC Limited | Administrative & support | 2006 |
| Kingsbridge Tile Limited | Construction | 2009 |
| KJT Haulage Ltd | Transport & logistics | 2022 |
| Komaki Ltd | Wholesale & retail | 2025 |
| Ktechnology Limited | Information & communication | 2019 |
| L P B Properties Limited | Real estate | 2001 |
| Landpath Owners Ltd | Households | 2016 |
| LATITUDE360 Ltd | Real estate | 2014 |
| Laura Silcock Freelance Design Ltd | Professional & scientific | 2017 |
| Lawrence Paul Associates Limited | Construction | 2003 |
| Lazy COW (Devon) Ltd | Hospitality | 2018 |
| Leading Schools South West Limited | Education | 2012 |
| LEE Bonham Consulting Ltd | Professional & scientific | 2018 |
| LET IT OUT Devon Limited | Real estate | 2019 |
| LGF Property 1 Limited | Real estate | 2019 |
| Library Court Management Company Limited | Real estate | 2000 |
| Liddle Creative Studio Ltd | Professional & scientific | 2020 |
| Lighthouse Consulting (South West) Limited | Real estate | 2024 |
| Lingwood Hall Limited | Other services | 2023 |
| Link Marketing Solutions Ltd | Other services | 2005 |
| Linkside House (Thurlestone) Limited | Real estate | 1975 |
| Listo Projects Ltd | Professional & scientific | 2025 |
| Little Pickle (Kingsbridge) Limited | Hospitality | 2023 |
| LJL Property Estate Management Ltd | Real estate | 2018 |
| Loampits Farm Ltd | Financial services | 2025 |
| Local Plumbing Solutions Limited | Construction | 2001 |
| Lockabox Limited | Manufacturing | 2013 |
| Loddiswell Consulting Limited | Information & communication | 2015 |
| Lookout View Ltd | Hospitality | 2025 |
| Lorytus Limited | Hospitality | 2018 |
| Lost for Words Media Ltd | Professional & scientific | 2014 |
| Lower Coltscombe Management Limited | Real estate | 2003 |
| Lower Coombe Quadrangle Ltd | Real estate | 2016 |
| Lower Coombe Royal Limited | Administrative & support | 2017 |
| LPB Software Ltd | Information & communication | 2021 |
| Ltmp Consultancy Ltd | Professional & scientific | 2016 |
| Lucy Rose Illustration Ltd | Arts & recreation | 2023 |
| Luke Adams Production Limited | Administrative & support | 2026 |
| Luxury Lifestyle Media Group Limited | Professional & scientific | 2017 |
| M & B Oils (South West) Ltd | Water & waste | 2018 |
| M & T Enterprises Limited | Wholesale & retail | 2005 |
| M.H.Holland Consulting Limited | Professional & scientific | 2003 |
| Magic Door Productions Limited | Wholesale & retail | 2026 |
| Mala Salcombe Ltd | Hospitality | 2022 |
| Malcolm Franke & Co Ltd | Professional & scientific | 2004 |
| Malt Mill (Phase 3) Management Company Limited | Administrative & support | 2004 |
| Maltmill Management Limited | Administrative & support | 1999 |
| Mangetout (UK) Ltd | Hospitality | 2007 |
| Manor Court (South Brent) Management Company Limited | Households | 1988 |
| Marchand Petit Holdings Limited | Real estate | 2004 |
| Marchand Petit Management Limited | Financial services | 2022 |
| Marchand Petit Property Limited | Financial services | 2017 |
| Marchand Petit Trade Limited | Financial services | 2017 |
| Mardy Place Limited | Hospitality | 2026 |
| Marianas Limited | Professional & scientific | 2004 |
| Marinoak Limited | Real estate | 2026 |
| Mark Bolton Photography Limited | Professional & scientific | 2010 |
| Mark Davis Antiques Limited | Wholesale & retail | 2015 |
| Mark Owen Photography Limited | Professional & scientific | 2013 |
| Mark Vallance Groundworks Ltd | Construction | 2022 |
| Markes Marketing Ltd | Manufacturing | 1996 |
| Marlow Enterprises Ltd | Information & communication | 2010 |
| Marshall Building Maintenance Ltd | Administrative & support | 2013 |
| Martyn Barlow Building Ltd | Construction | 2006 |
| Marvel Fitness (SW) Ltd | Arts & recreation | 2020 |
| Marvel Merch (SW) Limited | Arts & recreation | 2024 |
| Matt Solomon Strength & Conditioning Ltd | Arts & recreation | 2023 |
| Matthew Lamble Painter & Decorators Limited | Construction | 2006 |
| Max-I-Mize Ltd | Education | 2010 |
| MB Building Services (SW) Ltd | Construction | 2022 |
| Mcgeachy Martin Limited | Professional & scientific | 2022 |
| Mcjg Limited | Construction | 2014 |
| Mclaney Limited | Information & communication | 2012 |
| Mead Management Company Limited | Households | 1970 |
| Megan Studio Ltd | Information & communication | 2017 |
| Mercator Nodes Limited | Information & communication | 2026 |
| Merchants Garden Limited | Households | 1988 |
| Metapath Limited | Health & social care | 2012 |
| Mh-Celik Limited | Wholesale & retail | 2020 |
| Mitchelmore Shellfish Limited | Agriculture & fishing | 2018 |
| Mizt Ltd | Wholesale & retail | 2025 |
| Monkston Point (Management) Limited | Real estate | 2003 |
| Moon Carrot Media Ltd | Professional & scientific | 2021 |
| Morgan Accountants Ltd | Professional & scientific | 2018 |
| Morgan Corporate Services Ltd | Professional & scientific | 2018 |
| Morten Limited | Information & communication | 2013 |
| Mortmain Limited | Information & communication | 2003 |
| Motor City (Plymouth) Limited | Wholesale & retail | 2006 |
| Mount Folly Ltd | Real estate | 2020 |
| MP2 Design Architects Ltd. | Professional & scientific | 2015 |
| MSP Surveyors Limited | Professional & scientific | 2025 |
| MTM Diagnostics Ltd | Professional & scientific | 2016 |
| MU Workshop Ltd | Construction | 2019 |
| Mynd Palace Ltd | Information & communication | 2026 |
| Mysalcombe Ltd | Hospitality | 2016 |